Answer Posted / ravindra surdikar

sulphuric acid reacts with inorganic compounds and
converted in to there sulphats and oxides

How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

2629

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how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

2653

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how much mass should be there in volumetric flask while in preparation of sample for assay? 

2664

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WHY given much noise PDA dector then VWD Dector

2145

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what are the standard methods for HPLC?

2831

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CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

1260

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for which product require to do content uniformity? what is limit of cu?

875

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if peak get problamatic then what require to do?

861

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in gas chromatography what is the difference between gas flow rate and average linear velocity ?

2652

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What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7605

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how you start the solubility study?

863

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Difference between the quantitative analysis and qualitative analysis?

1244

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In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

2015

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What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8916

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why we use a particular hplc column for a particular compound give reasons?please

2790

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